Question

5x^2 - 4 - 3x^2 + 8 + 5x -13, when x = -2​

Answer 1

Step-by-step explanation:

5x2 - 4 - 3x2 + 8 + 5x - 13. (x = -2)

5(-2)2 - 4 - 3(-2)2 + 8 + 5(-2) - 13

5×4 - 4 - 3 × 4 + 8 -10 -13

20 - 4 - 12 + 8 - 10 -13

16 + 12 -10 -13

-11 ans....